Comment by Sasori

Reference to the currently defunct Undermine Journal created by Erorus. It tracks the prices and other statistics for items across all servers and factions auction houses.

Comment by perculia

This item is named after Erorus, who developed The Undermine Journal and Realm Pop before starting work at Wowhead in 2013. The flavor text on the item refers to The Undermine Journal, which tracks all auctions.

Comment by seoulcrusher

Dropped for me today (Nov 17th 2014) from a Leatherhide Clefthoof while questing in Nagrand.

Comment by Zothik

Confirmed as a BoE drop from random mobs in Draenor. Dropped for me today in a random mob while doing a quest in Nagrand.

Comment by TimB1087

I have been a long standing member of Stormspire.net (although not as long as some others), and have personally lent a helping hand to test and provide feedback to wonderful tools such as The Undermine Journal and TSM 2.0. Erorus even created an addon for me called Goblinventory, but has been discontinued to lack of use/popularity.

Erorus is a great help to the gold making community, and I'm glad he finally got some sort of recognition from Blizzard. Now it's Sapu's and Sterling's turn. If not for them two, The Undermine Journal would not have gotten the proper feedback and addon implementation that made what it is today.